One things I'm a little concerned about is the lack of what appears to be a "selected sub-weapon" icon on the game screens and the apparent lack of a weapon choice menu on the character select screen. This leads me to surmise that each character will only be given one primary weapon and one subweapon. Or else, perhaps each ability is "innate" and is pulled off with a different button combination. Perhaps the system is complicated like Alucard's spell system in Symphony of the Night or like Street Fighter, but I'm sure the X-Box 360 controller has more than enough buttons that could simply be pressed or pressed while holding up to make for a variety of easily executed attacks. It doesn't look like they're cycled through like in Julius Mode in Dawn of Sorrow or obtained from candles. Of course, there might be an equip menu that we're just not seeing, but given the real time nature of this game, I am not expecting one. Its possible that you have all these abilities from the beginning or that they are earned, perhaps as rewards for defeating the boss or as scrolls in treasure chests. I'm going to guess that the stuff in the treasure chests though are going to be universal things any character could use and get the same benefit from, similar to the things you find in Order of Ecclesia's training areas, like Speed Up, Defense Up, Attack Up, Jump Higher, HP Refresh. I do hope they have enough interesting weapons available to keep the game more varied.
I think the most important questions are "will this be fun" and "will this be worth $10" (or whatever they charge). I think the answer may very well be "yes" to both of these.